unity launcher and task switcher don't distinguish between 3 and many instances running

[Reece H. Dunn]

1. Open one instance of an application.

NOTE: Unity displays an arrow overlay on the center left of the icon.

2. Open a second instance.

NOTE Unity displays two dots (launcher) and wedges (task switcher) -- one per instance.

3. Open a third instance.

NOTE Unity displays three dots (launcher) and wedges (task switcher) -- one per instance.

4. Open a fourth instance.

NOTE Unity *still* displays three dots (launcher) and wedges (task switcher).

NOTE: This breaks the pattern of one dot/wedge per running instance of the application. It will be infeasible to do this continually, and 3 instances is a good number to stop at. The problem here is that the user cannot distinguish between only 3 instances running, or more than 3 instances running.

As a result, there should be a different glyph to indicate "more than 3 instances of this application running".

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.24.0-0ubuntu2b1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CheckboxSubmission: 5434425585a31b50d9fa7c3153a37fe1
CheckboxSystem: b845c366ea09c60efa3a45c1b5b21525
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,regex,snap,move,vpswitch,grid,mousepoll,gnomecompat,animation,place,imgpng,wall,expo,resize,unitymtgrabhandles,ezoom,workarounds,session,fade,scale,unityshell]
Date: Tue Nov 8 07:54:39 2011
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to oneiric on 2011-09-24 (44 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.